consultation with field for multiple criteria

Gentlemen,


I have a subform with the following fields: name of the step, the scheduled date, place and date rescheduled date. I'm having trouble making a statement in a query
that has the following criteria: need to know what the step is smaller than today's date between the date scheduled and rescheduled date and the date performed without value.
if there are any other dates scheduled and rescheduled less than today, I need to know only the name is the first step with the date due.
I think I need to create a field in the query to the term, but I'm not getting. Any help is welcome. Thank you.